Wrench.



No. 878,968. PATENTED FEB. 11,1908.

F. LINDSAY.

WRENCH."

APPLICATION FILED AUG. 1. 1907.

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FRANK LINDSAY, OF ETNA, PENNSYLVANIA.

WRENCH.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed August 41 07. Serial No- 386.592.

To all whom it may concern:

Be it known that I, FRANK LINDSAY, a citizen of the United States ofAmerica, residing at Etna, in the county of Allegheny and State ofPennsylvania, have invented certain new and useful Improvements inWrenches,

of which the following is a specification, reference being had thereinto the accompanying drawing. I

This invention relates to wrenches, and its object is to provide asimple and inexpensive device of the character adapted to be readilyadjusted,

The construction of the improvement will be fully described hereinafter,in connection with the accompanying drawing, which forms a part of thisspecification, and its novel features will be defined in the appendedclaims.

In the drawing, Figure l is a side elevation of a wrench embodying theinvention, Fig.2 is a transverse section on the line wac of Fig. 1 withthe fixed aw reversed, and Fig. 3 is a side elevation of the fixed jawdetached.

The reference numeral 1 designates a frame formed with threaded bearings2 and 3 for the passage of a shank 4 which is flattened on oppositesides, and formed with threads 5, engaging the threads of a serrated nut6, said nut occupying the space between the bearings 2 and 3.

A handle 7 is secured to the lower end of the frame 1, and adjacent toits u per end the frame is formed with two paral el laterally projectingintegral arms 8, between which is detachably secured by a pin 9 thedepending bracket 10 of the fixed jaw 11. This jaw 11 rests upon thearms 8 and is beveled on its upper surface 12 as shown.

The side of the frame is longitudinally reoessed as at 13 to provide ashoulder 14 upon which the lower end of the bracket 10 rests. The upperend of the recessed portion 13, is cut away to form a rest or shoulderfor the inner edge ofthe fixed jaw 11, said jaw extending inwardly pastthe recessed portion 13. The upper end of the shank 4 carries themovable jaw 15 of the wrench, said jaw being preferably formed integralwith the shank and having its working face provided with teeth ornotches 16.

The operation of the wrench will be obvious from the illustration inFig. 1, the turning of the serrated nut 6 serving to adjust the aw 15with relation to the fixed aw 8.

A characteristic of the invention is, that the shank and jaw carriedthereby, are ad justable, thus making the upper, or outermost jaw themovableimember, instead of adjusting the lower jaw upon the shank as inthe ordinary type of wrench. The removability of the aw 12 also adds tothe utility of the device, permitting the removal of said jaw when worn,and the substitution of one form of jaw for another.

Having now described my I claim as new, is

In combination, a wrench frame having as a part thereof a body portion,a handle, and a pair of laterally extending arms formed integral withsaid body portion at a point removed from the to edge thereof therebyproviding a vertically extending shoulder, said arms constituting aremovablejaw support and suitably spaced apart to form a web receivingopening and further having formed therebetween at the, inner ends avertically disposed recess forming a continuation of the webreceivingopening and with the bottom wall of said recess constituting aledge, a jaw mounted upon said arms and abutting against said shoulder,a web formed integral with the jaw approximately centrally of its lowerface andpositioned within said opening and recess and mounted upon theledge, means extending through the arms of the web for connecting themtogether, a shank mounted in said frame and carrying arigid jaw arrangedin suitable relation with respect to the movable jaw, and means forvertically adjusting the shank.

In testimony whereof I aflix my signature in the presence of twowitnesses.

FRANK LINDSAY.

invention, what Witnesses:

MAX H. SRoLoVrrz, A. M. WILsoN.

